CVE-2026-86858

published 2026-09-24

CVE-2026-86858: ServiceNow has remediated an improper access control security issue that was identified in the ServiceNow AI Platform. This security issue could enable an…

Priority P3 52 high 8.7 CVSS 4.0

AV N AC L AT N PR N UI N VC N VI H VA N SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

ServiceNow has remediated an improper access control security issue that was identified in the ServiceNow AI Platform. This security issue could enable an unauthenticated user, in certain circumstances, to create, modify, or delete instance data beyond what was intended.

In August 2026, ServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of malicious exploitation against ServiceNow instances. We recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
servicenow	servicenow_ai_platform	< Yokohama Patch 13 Hot Fix 5a	Yokohama Patch 13 Hot Fix 5a
servicenow	servicenow_ai_platform	< Zurich Patch 10 Hot Fix 3b	Zurich Patch 10 Hot Fix 3b
servicenow	servicenow_ai_platform	< Zurich Patch 10 Hot Fix 4a W32	Zurich Patch 10 Hot Fix 4a W32
servicenow	servicenow_ai_platform	< Zurich Patch 11 Hot Fix 3	Zurich Patch 11 Hot Fix 3
servicenow	servicenow_ai_platform	< Australia Patch 2 Hot Fix 4b W32	Australia Patch 2 Hot Fix 4b W32
servicenow	servicenow_ai_platform	< Australia Patch 4 Hot Fix 3	Australia Patch 4 Hot Fix 3
servicenow	servicenow_ai_platform	< Australia Patch 5	Australia Patch 5

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CWE-284